Spark arrester



Feb. 24. 192s. I 1,527,580 C. DE KOCK SPARK ARRESTER 2 Sheets-Sheet 2.

6% WMM atto/umg Patented Feb. 24, 1925.

NUNITED STATES.

CHARLES DE KOCK, 0F WHITE LAKE, SOUTH DAKOTA.

SPARK ARRESTER.

Application filed October 7, 1924. Serial No. 742,187.

To all whom t may concern.'

Be itknown that I, CHAnLEs Dn Koen, a citizen of the United States,residing at lhite Lake, in the county of Aurora and State of SouthDakota, have invented certain new and useful Improvements in SparkArresters, of which the following is a specification, reference beinghad to the accompanying drawings.

This invention relates to spark arresters, and has for an importantobject thereof the provision of a device of this character which may bevery cheaply produced and readily installed upon the locomotive.

A further object of the invention is to provide a device of thischaracter in which a minimum amount of back pressure is placed againstthe exhaust of the gases from the locomotive stack.

A further object of the invention is to provide in a device of thischaracter a novel and improved means for arresting the force of blowingcinders, which has been imparted thereto by the gases exhausting fromthe stack, so that they may fall to the right-ofway by gravity and notbe blown high into the air so that they are carried out into fieldswhere they are likely to cause fires.

A further and more specific object of the invention is to provide anovel and improvedbafiling means for the gases so that their forces areexpended without producing an undesirable back pressure.

These and other objects I attain by the construction shown in theaccompanying` drawings, wherein for the purpose of illustration is showna preferred embodiment of my invention and whereinz- Figure 1 is a sideelevation of a stack having a spark arrester constructed in accordancewith my invention applied thereto, the arrester being shown in dottedlines in inoperative position;

Figure 2 is an enlarged detail sectional view showing the stack-attachedsupports by` means of which the arrester is connected with the stack;

Figure 3 is an enlarged fragmentary side elevation at right angles tothat4 shown in Figure 1, a portion of the casing being broken away toshow the bailes 23;

Figure l is a vertical sectional View taken through the spark arresterand stack;

Figure 5 is a transverse sectional view through the spark arrester onthe line 5--5 .of Figure 4e 'stack is indicated at 12.

Referring now more particularly to the drawings, the spark arrestercomprises a cylindrical casing 1 0 adapted to be secured above the upperend of the locomotive stack 11. As a preferred means of attaclnnent, 1

employ the structure more specifically illustrated in Figure 2. 1n thisligure. the rolled reinforced edge of the upper end of the Beneath thisstack a clamping band 13 is arranged. r1`wo U- sha-ped supportingmembers are` provided,

ment with the rolled edge. The upper arm 16 of the U-shaped member isprovided with a vertically and upwardly extending vflange 17, the upperend of which is provided with spaced rolled eyes 18 receivingtherebetweenv a, single eye 19 formed on the lower end of a strap or bar20, the upper end of which is rigidly secmed to the cylinder 10, as at21. The combined lengths of the fiange 17 and bar 20 beneath the member10 are preferably such that the lower i end of the cylinder is supportedabove the upper end of the stack with an intervening space of about onefoot.

lithin the lower end of the cylinder 10 larger end of which is disposeddownwardly and provided with a lfla-nge 23 which is secured to the.inner wall of the cylinder 10. The cylinder, in alignment with t-hetruncoconica-l sleeve 22, is provided in its side wall with a pluralityof circumferentially spaced openings 2A the upper ends of which arearranged at approximately the level of the upper end of the sleeve 22,and the lower `is arranged a. trunco-conica] sleeve 22, the

ends of which coincide with the lower end of this sleeve. The truncationof the sleeve forms a central opening 25 above which is supported aninverted conical battle 26 having its axis coinciding with the axis ofthe cylinder, supports for this baffle preferably extending between thebaffle 26 and the exterior face of the sleeve, as indicated at 27 Thebalie 26 has its larger upper end of greater diameter than the opening25. Secured to the cylinder wall is an inverted trunco-conical sleeve 28similar to the sleeve 22 and having its open lo ver end 29 arrangedabove the upper end of the inverted conical battle 26. If desired, thestructure hereinbefore described, including the truncoconical sleeves 22and 28 and interposed battle 26, may be repeated above the baille 26, asillustrated, although a single set of such sleeves and battle isordinarily su'liicient.

In installing the device, the band 13 is mounted upon the stack afterthe two U- shaped retaining members 14 have been applied to the stack atdiametricaily opposed points upon the rolled edge 12 thereof. T his bandis tightened upon the lflanges 16 so as to hold these members immovable.To one of the supporting bars 2O of the cylinder 10 one pair of the eyes18 is permanently pivotally connected by means of a. pintle 30, whilethe other eyes 18 are connected with the eye 19 by a removable pin 31,so that this pin may be removed to permit the spark arrester to be swungto folded or inoperative positions upon the stack, as shown in dottedlines in Figure 1. During the operation of the engine, gas blown fromthe stack will enter the lower end of the cylinder which, as shown, isof greater diameter than the stack and will be converged by thetruncoconical sleeve 22 and cause it to impinge against the battle plate26 by which the gases are diverged, together with the cinders carriedthereby, and directed upwardly into the angle 32 between the invertedtruncoconical sleeve 28 and the wall of the cylinder 10. I-Iere thegases substantially come to rest, finally passing through the openingbetween the lower end of the inverted trunco-conical sleeve 28 and thebaffle 26, and passing upwardly through the opening 29 of the invertedconical sleeve 28 to escape, or, if a second series .of sleeves andbaille be provided, to pass through such series where the sequence abovegiven is repeated. In the angle 32, where the gases come to rest, thecinders drop by gravity upon the upper outer surface of the conicalsleeve 22 and are directed downwardly and outwardly thereby to passthrough the openings 24. In order that cinders may not lodge between thewalls of the sleeve 22 and cylinder 1() intermediate the openings 24C, Iprovide intermediate the edges of the openings between the wall of thecylinder and the walls of the sleeve 22 wedge portions 83 fitting attheir outer edges against the walls of the cylinder 10 and at theirinner edges against the walls of the battles, the peaks of these wedgeportions being upwardly directed and arranged substantially centrallybetween adjacent edgesl of openings 24. It will be obvious that astructure of this character may be very cheaply and readily produced andis quite as readily and cheaply attached to the locomotive.

It will furthermore be obvious that this structure is capable of acertain range oit change and modification without materially departingfrom the spirit of my invention, and I accordingly do not limit myselfto such specific structure as hereinbefore ser forth except ashereinafter claimed.

I claim 1. In a spark arrester and in combination with a smoke-stack, acylinder of greater diameter than the smoke-stack, means for supportingthe cylinder in spaced and axial relation to the stack, the cylinderbeing provided adjacent the lower end thereof with a plurality ofeircumferentially spacedopenings, a frustro-conical sleeve secured tothe cylinder at its downwardly directedv larger end immediately belowthe lower edges ol said openings, an inverted conical battle supportedabove the open smaller end of said sleeve, and an invertedfrustro-conical sleeve secured to the cylinder above and in spacedrelation to the upper end of said baffle.

2. In a spark arrester and in combination with a smoke-stack, a cylinderof greater diameter than the smoke-stack, means for supporting thecylinder in spaced and axial relation to the stack, the cylinder beingprovided adjacent the lower end thereof with a plurality ofcircumferentially spaced openings, a frustroconical sleeve secured tothe cylinder at its downwardly directed larger end immediately below thelower edges of said openings, an inverted conicalbaffle supported abovethe open smaller end of said sleeve, an inverted frustro-conica-l sleevesecured to the cylinder above and in spaced relation to the upper end ofsaid balie, and baffles connecting the first named sleeve and the wallof the cylinder intermediate the openings for directing cindersdownwardly and outwardly to the edges of the openings.

3. Means for supporting a spark arrester upon the ripper ends of stackshaving rolled extremities comprising a plurality of U- shaped membersstraddlingl the rolled edge of the stack and each provided withdownwardly extending portions, a clamping band surrounding the stack andsecuring thereto the downwardly extending portions of the U=shapedmembers, and means at the upper end of the U-shaped members forattachment to the spark arrester.

In testimony whereof I hereunto aliix my signature.

CHARLES DE KOCK.

